OG192，对于一个句子的理解，麻烦大家了！

192.
Mourdet Winery: Danville Winery’s new wine was introduced to compete with our most popular wine, which is sold in a distinctive tall, black bottle. Danville uses a similar bottle. Thus, it is likely that many customers intending to buy our  wine will mistakenly buy theirs instead.

Danville Winery: Not so. The two bottles can be readily distinguished: the label on ours, but not on theirs, is gold colored.

Which of the following, if true, most undermines Danville Winery’s response?

(A) Gold is the background color on the label of many of the wines produced by Danville Winery.
(B) When the bottles are viewed side by side, Danville Winery’s bottle is perceptibly taller than Mourdet
Windery’s.
(C) Danville Winery, unlike Mourdet Winery, displays its wine’s label prominently in advertisements.
(D) It is common for occasional purchasers to buy a bottle of wine on the basis of a general impression of the
most obvious feature of the bottle.
(E) Many popular wines are sold in bottles of a standard design.

这道题答案是D，我做对了。但是，对于E的理解我和OG不一样，请哪位帮忙看一下吧，谢谢。

OG说：The fact that some popular wines can be distinguished from Mourdet’s by their bottle shape (choice E) says nothing about whether the difference in labels is enough to prevent consumers from buying Danville’s wine instead of Mourdet’s.

可是我觉得E说：许多受欢迎的葡萄酒的瓶子都是经过的同一个标准设计的，就是说他们的瓶子是一样的。

因为E里用的是单数a standard design. 如果E改成"Many popular wines are sold in bottles of standard designs."才是OG的意思吧？？？？

这是不是语法问题呀？不管啦，就来这里麻烦大家一下吧...谢谢！

睡前再顶一下！

不能放弃...

(D) It is common for occasional purchasers to buy a bottle of wine on the basis of a general impression of the most obvious feature of the bottle.

这里的occasional指的是"通常的"消费者，还是"极少的"消费者?

两者都不是，happening sometimes but not often or regularly